Question about inheritence

Help & Support
1

Hi guys, today I did this small test for the need of my project.

I would like to understand why the result is false ?

class Mother

    def self.isDaughter : Bool
        return self.class == Daughter
    end

end

class Daughter < Mother
end

puts Daughter.isDaughter
2

Because self.class in the class scope of Mother is Class. You probably just want self == Daughter. But depending on your exact use case this may not work the way you think since a) you’re not working with instances here, and b) it won’t actually let the compiler narrow the type to Daughter instead of Mother if they were instances anyway.